A cylindrical loess sample sampling device

Abstract

The present disclosure relates to the technical field of loess sampling, and an embodiment of the present disclosure provides a cylindrical loess sample sampling device, which comprises a main frame and a pair of support frames fixed at the two ends of the bottom of the main frame, a sampling cylinder arranged on the main frame, a connecting sampling assembly arranged between the sampling cylinder and the main frame, a support moving assembly arranged outside the main frame, and the connecting sampling assembly comprises a connecting frame, the bottom of the connecting frame is provided with a rotating frame driven to rotate by electricity, the bottom of the rotating frame is provided with a plurality of insertion slots, the sampling cylinder is inserted into the insertion slots, the sampling cylinder and the rotating frame are fixedly connected through bolts, and the top of the sampling cylinder is provided with a circular port. Through the above technical scheme, the technical problem that the sampling cylinder used in the prior art for loess sampling is generally of an integral structure, and the cylindrical loess sample is not convenient to take out after sampling due to adhesion or extrusion with the cylinder wall is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of loess sampling, specifically to a cylindrical loess sample collection device. Background Technology

[0002] In the fields of geotechnical engineering investigation, geological research, and building foundation testing, obtaining cylindrical loess samples is a fundamental prerequisite for analyzing the physical and mechanical properties of loess (such as compressibility and shear strength). The integrity and efficiency of sampling directly determine the accuracy of subsequent test data and the reliability of engineering decisions. As a specialized sampling tool, the structural rationality and ease of operation of cylindrical loess sample collection devices directly affect the practicality of sampling operations. With the increase in engineering construction in loess areas (such as highways and building foundations), the shortcomings of traditional sampling devices have become increasingly prominent: the sampling cylinders used for existing loess sampling are generally of an integral structure. After sampling, the cylindrical loess sample is easily adhered to or tightly compressed by the cylinder wall, making it difficult to remove. Moreover, the integral structure is heavy and lacks portable design, making the device inconvenient to move and difficult to meet the needs of field investigation or multi-point sampling.

[0003] Traditional integral sampling tubes are mostly made of seamless metal tubes. During sampling, the tube body is pressed into the loess layer by external force. Although it can obtain cylindrical samples, the loess has a certain degree of stickiness. When the sample is removed, it is necessary to use tools to forcibly pry or knock the tube wall. This is not only laborious, but also easy to cause the sample to break or break, destroying its original structure and affecting the accuracy of the test. At the same time, integral sampling tubes do not have a disassembly or lightweight and portable design. Especially for long cylindrical devices for deep sampling needs, multiple people are required to carry them. In the field exploration scenario with complex terrain, the movement process is time-consuming and labor-intensive, which greatly reduces the efficiency of multi-area sampling.

[0004] Therefore, developing a cylindrical loess sample collection device with a convenient material collection structure and easy mobility has become an urgent need to improve loess sampling efficiency and sample integrity. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a cylindrical loess sample sampling device, which solves the technical problem that the sampling cylinders used in existing loess sampling are generally integral structures, and the cylindrical loess samples are easy to stick to the cylinder wall or be squeezed tightly after sampling, making it inconvenient to take them out.

[0006] According to one aspect, at least one embodiment of this disclosure provides a sampling device for cylindrical loess samples, comprising: The main frame and a pair of support frames, the support frames being fixed at both ends of the bottom of the main frame; A sampling cylinder and a connecting sampling assembly are provided, wherein the sampling cylinder is disposed on the main frame and the connecting sampling assembly is disposed between the sampling cylinder and the main frame; A supporting movable component is disposed on the outside of the main frame; The connection sampling assembly includes a connection frame, and a rotating frame that is driven by electricity is provided at the bottom of the connection frame. The bottom of the rotating frame has several slots, and the sampling tube is inserted into the slots. The sampling tube and the rotating frame are fixedly connected by bolts, and the top of the sampling tube has a circular opening.

[0007] As a further technical solution, a sliding protrusion is provided around the side surface of the sampling cylinder, and a sleeve is rotatably connected to both ends of the bottom of the connecting frame via a pin. The lower end of the sleeve is slidably fitted outside the sliding protrusion, and a fixing block is provided at both ends of the bottom of the connecting frame.

[0008] As a further technical solution, the connecting frame and the fixing block are fixedly connected by bolts. A pair of guide slide rods are vertically arranged inside the main frame. The connecting frame is vertically slidably connected to the guide slide rods. An electric telescopic rod is vertically downward arranged at the top of the main frame. The output end of the electric telescopic rod is fixedly connected to the connecting frame.

[0009] According to another aspect, in at least one embodiment of the present invention, the supporting moving assembly includes a pair of supporting wheels, each of which is fixed to the lower end of the side surface of the main frame. A pair of supporting rods are provided on the side surface of the main frame, and each of the supporting rods is provided with a pulley at one end.

[0010] As a further technical solution, a layer of shovel teeth is provided around the bottom side surface of the sampling tube.

[0011] As a further technical solution, a push-pull handle is provided on the top of the main frame.

[0012] As a further technical solution, the front ends of the support frame are all bent outwards, and the support frame is located on both sides of the sampling cylinder.

[0013] As a further technical solution, the pulley is a universal wheel that can rotate in any direction.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the connecting sampling assembly solves the problems of difficult sample removal and easy sampling deviation associated with traditional integral sampling tubes through its convenient demolding and precise sampling design. The multi-slot design of the rotating frame allows for batch installation of sampling tubes, and bolt fixing ensures stable sampling. After sampling, the sampling tube can be individually disassembled by pushing it from the circular opening, preventing sample adhesion and damage, and ensuring sample integrity. An electric telescopic rod drives the connecting frame to rise and fall vertically along the guide slide, working in conjunction with the sleeve and sliding protrusion to ensure the sampling tube is vertically inserted into the loess. The excavating tooth layer reduces insertion resistance, improving sampling efficiency and sample morphology accuracy. This structure eliminates the need to pry or strike the sampling tube, achieving non-destructive sample removal. It is also suitable for batch sampling, shortening operation time and meeting the geotechnical engineering requirements for loess sample integrity and accuracy. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle; In the diagram: 1. Main frame; 2. Support frame; 3. Sampling cylinder; 4. Connecting sampling assembly; 4-1. Connecting frame; 4-2. Rotating frame; 4-3. Slot; 4-4. Circular opening; 4-5. Sliding protrusion; 4-6. Sleeve; 4-7. Fixing block; 4-8. Guide slide rod; 4-9. Electric telescopic rod; 5. Support moving assembly; 5-1. Support wheel; 5-2. Support rod; 5-3. Pulley; 6. Soil-scraping tooth layer; 7. Push-pull handle. Detailed Implementation

[0017] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0018] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0020] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-4 As shown, it illustrates a cylindrical loess sample collection device according to an embodiment of the present disclosure, comprising: The main frame 1 and a pair of support frames 2 are fixed at both ends of the bottom of the main frame 1. The sampling cylinder 3 and the connecting sampling assembly 4 are provided. The sampling cylinder 3 is disposed on the main frame 1, and the connecting sampling assembly 4 is disposed between the sampling cylinder 3 and the main frame 1. A supporting movable component 5 is disposed on the outside of the main frame 1; The connecting sampling assembly 4 includes a connecting frame 4-1. A rotating frame 4-2, driven by electricity, is located at the bottom of the connecting frame 4-1. Several slots 4-3 are formed at the bottom of the rotating frame 4-2, and the sampling cylinder 3 is inserted into each slot 4-3. The sampling cylinder 3 is fixedly connected to the rotating frame 4-2 by bolts. A circular opening 4-4 ​​is formed at the top of the sampling cylinder 3, and sliding protrusions 4-5 are formed around the side surface of the sampling cylinder 3. Sleeves 4 are rotatably connected to both ends of the bottom of the connecting frame 4-1 via pins. -6, the lower end of the sleeve 4-6 is slidably fitted outside the sliding protrusion 4-5, and the bottom ends of the connecting frame 4-1 are provided with fixing blocks 4-7. The connecting frame 4-1 and the fixing blocks 4-7 are fixedly connected by bolts. A pair of guide slide rods 4-8 are vertically arranged inside the main frame 1. The connecting frame 4-1 is vertically slidably fitted onto the guide slide rods 4-8. An electric telescopic rod 4-9 is vertically downward arranged at the top of the main frame 1. The output end of the electric telescopic rod 4-9 is fixedly connected to the connecting frame 4-1.

[0024] In some examples, in order to achieve efficient sampling and complete demolding of cylindrical loess samples and avoid sample damage or difficulty in disassembling the sampling tube 3 during the sampling process, a rotating frame 4-2 driven by electricity is designed at the bottom of the connecting frame 4-1 of the sampling component 4 to provide a multi-station installation base for the sampling tube 3. Several slots 4-3 opened at the bottom can simultaneously insert multiple sampling tubes 3. When the rotating frame 4-2 rotates, it can rotate the empty sampling tubes 3 to the sampling station in sequence. After sampling, it is rotated to the demolding area, which improves the efficiency of batch sampling. The sampling tube 3 and the rotating frame 4-2 are fixed with bolts to ensure that the sampling tube 3 moves synchronously with the rotating frame 4-2 during sampling and does not loosen, avoiding sample shape deviation caused by shaking of the sampling tube 3.

[0025] The circular opening 4-4 ​​at the top of the sampling tube 3 provides a channel for demolding the loess sample. After sampling, the bolts connecting the sampling tube 3 and the rotating frame 4-2 can be removed, and the sampling tube 3 can be removed separately. The cylindrical loess sample can be pushed out completely from the circular opening 4-4 ​​without damaging the sampling tube 3 or the sample, thus ensuring the integrity of the sample.

[0026] The sliding protrusion 4-5 on the side surface of the sampling cylinder 3 cooperates with the sleeve 4-6 rotatably connected to the bottom ends of the connecting frame 4-1. The lower end of the sleeve 4-6 is slidably fitted outside the sliding protrusion 4-5. When the electric telescopic rod 4-9 drives the connecting frame 4-1 to descend vertically along the guide slide rod 4-8 in the main frame 1, the sleeve 4-6 can slide along the sliding protrusion 4-5 and maintain the vertical posture of the sampling cylinder 3, avoiding the collapse of the sample sidewall caused by the tilting of the sampling cylinder 3, and improving the sampling accuracy. The symmetrical distribution of guide rods 4-8 ensures that the connecting frame 4-1 can be raised and lowered vertically smoothly without deviation or shaking. The precise telescopic control of the electric telescopic rod 4-9 can adjust the depth of the sampling tube 3 inserted into the loess, adapting to the sampling needs of samples of different lengths. The bolt fixing of the fixing block 4-7 to the connecting frame 4-1 enhances the installation stability of the sleeve 4-6 and prevents the sleeve 4-6 from falling off during the sampling process.

[0027] During operation, the electric telescopic rod 4-9 lowers the connecting frame 4-1, the sampling cylinder 3 is inserted into the loess for sampling, the rotating frame 4-2 switches the sampling cylinder 3, and after sampling, the sampling cylinder 3 is disassembled for demolding. The multi-station design improves efficiency, convenient demolding ensures sample integrity, and the coordinated operation of all components enables accurate loess sampling, meeting experimental requirements.

[0028] like Figures 1-4 As shown in the figure, the supporting moving component 5 in this embodiment includes a pair of supporting wheels 5-1, both of which are fixed to the lower end of the side surface of the main frame 1. A pair of supporting rods 5-2 are provided on the side surface of the main frame 1, and each of the supporting rods 5-2 is provided with a pulley 5-3 at one end.

[0029] In some examples, to enable flexible movement and stable support of the sampling device in different site environments and to avoid difficulties in moving the device due to rugged terrain or narrow spaces, a support and movement component 5 is designed. This component includes a pair of support wheels 5-1 fixed to the lower end of the side surface of the main frame 1, which provide the main movement support for the device. The support wheels 5-1 are made of wear-resistant material and have a braking function. When the device is pushed, the support wheels 5-1 roll to move the device. After reaching the sampling position, the brake is locked to prevent the device from sliding and ensure the stability of the sampling process. A pair of support rods 5-2 with pulleys 5-3 at one end are set on the side surface of the main frame 1. They cooperate with the support wheels 5-1 to form a double movement support structure. When there is a slight slope or unevenness in the site, the pulleys 5-3 can assist the support wheels 5-1 in adjusting the posture of the device and prevent the device from tilting.

[0030] When the main frame 1 needs to be tilted slightly, lift one side of the device so that the support wheel 5-1 is supported on the ground alone. The rolling characteristics of the pulley 5-3 are used to achieve smooth movement in the tilted state. This is especially suitable for adjusting the position of the device in narrow spaces or at the edge of loess sampling areas. There is no need to move the entire device, which reduces the labor intensity of the operators. The length and installation angle of the support rod 5-2 have been optimized to ensure that the center of gravity of the device is stable when the pulley 5-3 is supported, and to prevent the device from tipping over when tilted. At the same time, it does not affect the normal operation of connecting the sampling component 4 during sampling. It can also be laid down and moved by the pulley 5-3 and the support wheel 5-1. The symmetrical distribution of support wheel 5-1 and pulley 5-3 ensures that the force is balanced when the device moves, avoiding excessive wear on one side; the firm connection between support rod 5-2 and main frame 1 enhances the support stability of pulley 5-3 and can withstand the overall weight of the device; the braking function of support wheel 5-1 ensures that the device does not shift during sampling and improves sampling accuracy.

[0031] During operation, the support wheel 5-1 is unlocked to brake and propel the device. After adjusting to the sampling position, the support wheel 5-1 is locked. If tilting is required, pulley 5-3 is used for assistance. Dual-mode movement adapts to multiple sites, stable support ensures operational safety, and the coordinated operation of all components enables flexible movement of the device to meet the needs of different sampling scenarios.

[0032] For example, such as Figure 1 As shown, a soil-scraping tooth layer 6 is provided around the bottom side surface of the sampling tube 3.

[0033] In some examples, the serrated layer 6 arranged around the bottom side surface of the sampling tube 3 significantly improves the efficiency of inserting the sampling tube 3 into loess. Loess often has a certain degree of viscosity and density, and the traditional smooth bottom of the sampling tube 3 experiences greater resistance during insertion, which can easily lead to tilting of the tube or disturbance of the loess layer. The serrated layer 6, with its sharp tooth-like structure, can pre-cut and break the loess at the sampling location, reducing the downward resistance of the sampling tube 3. This allows the electric telescopic rod 4-9 to drive the sampling tube 3 to descend more smoothly, while also preventing deformation of the sampling tube 3 due to excessive resistance, thus ensuring the integrity of the cylindrical sample shape.

[0034] For example, such as Figure 1 As shown, the top of the main frame 1 is provided with a push-pull handle 7.

[0035] In some examples, the push-pull handle 7 located on the top of the main frame 1 provides a convenient point of force for moving the device. Operators can easily push or pull the device by holding the handle. Compared to directly pushing the side of the main frame 1, the handle is ergonomically designed and can reduce hand fatigue. Especially when moving the device over long distances or adjusting fine positions, the handle can be used to precisely control the direction and speed of the device's movement, preventing the device from deviating.

[0036] For example, such as Figure 1 As shown, the front ends of the support frame 2 are all bent outwards, and the support frame 2 is located on both sides of the sampling cylinder 3.

[0037] In some examples, the design of the support frame 2 with its front end bent outwards and located on both sides of the sampling tube 3 enhances the stability of the device during sampling. As the main support structure when the device is stationary, the outward-bent front end of the support frame 2 increases the support contact area, lowers the device's center of gravity, and prevents the device from tipping over due to reaction forces when the sampling tube 3 is inserted into the loess. Simultaneously, its location on both sides of the sampling tube 3 avoids the sampling area and does not affect the vertical lifting and lowering of the sampling tube 3 or the switching of the sampling tube 3 by the rotating frame 4-2, ensuring a smooth sampling process.

[0038] For example, such as Figure 1 As shown, the pulley 5-3 is a universal wheel that can rotate in any direction.

[0039] In some examples, pulley 5-3 employs omnidirectional casters that can rotate in any direction, significantly improving the flexibility of the device's movement. Loess sampling sites often have complex terrain or require frequent adjustments to the direction of movement. Traditional directional pulleys 5-3 require multiple adjustments to the device's angle to change the direction of movement, making operation cumbersome. Omnidirectional casters can rotate 360°, allowing operators to easily adjust the movement path without frequent turning when pushing the device, which is especially convenient in narrow spaces or when avoiding obstacles.

[0040] In actual use: Hold the push-pull handle 7 on the top of the main frame 1 to unlock the brake of the support wheel 5-1 of the support moving component 5, push the device to move, and use the universal wheels to assist in adjusting the direction. After reaching the sampling position, lock the support wheel 5-1. According to the sampling requirements, insert the sampling cylinder 3 into the slot 4-3 of the rotating frame 4-2 and fix it with bolts. Start the connecting sampling component 4, and the electric telescopic rod 4-9 pushes the connecting frame 4-1 to descend vertically along the guide slide rod 4-8. The sleeve 4-6 slides along the sliding protrusion 4-5 of the sampling cylinder 3, keeping the sampling cylinder 3 vertical. The bottom soil-cutting tooth layer 6 cuts the loess, and the sampling cylinder 3 is smoothly inserted into the soil layer to complete the sampling. The electric telescopic rod 4-9 drives the connecting frame 4-1 to rise, and the electric power drives the rotating frame 4-2 to rotate, turning the empty sampling cylinder 3 to the sampling position, and repeating the sampling action. After sampling, remove the bolts connecting the sampling cylinder 3 and the rotating frame 4-2, remove the sampling cylinder 3 separately, and push it out from the top circular opening 4-4 ​​to completely remove the cylindrical loess sample. If a transfer device is needed, unlock the support wheel 5-1 and use the support wheel 5-1 in conjunction with the caster wheel to move the sample. In narrow areas, the device can be tilted and adjusted with the help of the pulley 5-3.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A sampling device for cylindrical loess samples, characterized in that, include: The main frame (1) and a pair of support frames (2) are fixed at both ends of the bottom of the main frame (1); The sampling tube (3) and the connecting sampling assembly (4) are provided. The sampling tube (3) is disposed on the main frame (1), and the connecting sampling assembly (4) is disposed between the sampling tube (3) and the main frame (1). A support moving component (5) is provided on the outside of the main frame (1); The connection sampling assembly (4) includes a connecting frame (4-1), and a rotating frame (4-2) driven by electricity is provided at the bottom of the connecting frame (4-1). The bottom of the rotating frame (4-2) is provided with a plurality of slots (4-3). The sampling tube (3) is inserted into the slots (4-3). The sampling tube (3) and the rotating frame (4-2) are fixedly connected by bolts. The top of the sampling tube (3) is provided with a circular opening (4-4).

2. The cylindrical loess sample collection device according to claim 1, characterized in that, The sampling tube (3) has a sliding protrusion (4-5) around its side surface. Both ends of the bottom of the connecting frame (4-1) are rotatably connected to a sleeve (4-6) via a pin. The lower end of the sleeve (4-6) is slidably fitted onto the outside of the sliding protrusion (4-5). Both ends of the bottom of the connecting frame (4-1) are provided with a fixing block (4-7).

3. The cylindrical loess sample collection device according to claim 2, characterized in that, The connecting frame (4-1) and the fixing block (4-7) are fixedly connected by bolts. A pair of guide slide rods (4-8) are vertically arranged inside the main frame (1). The connecting frame (4-1) is vertically slidably connected to the guide slide rods (4-8). An electric telescopic rod (4-9) is vertically downward arranged on the top of the main frame (1). The output end of the electric telescopic rod (4-9) is fixedly connected to the connecting frame (4-1).

4. The cylindrical loess sample collection device according to claim 1, characterized in that, The supporting moving assembly (5) includes a pair of supporting wheels (5-1), which are fixed to the lower end of the side surface of the main frame (1). A pair of supporting rods (5-2) are provided on the side surface of the main frame (1), and a pulley (5-3) is provided at one end of each supporting rod (5-2).

5. The cylindrical loess sample collection device according to claim 1, characterized in that, The bottom side surface of the sampling tube (3) is provided with a soil-scraping tooth layer (6).

6. The cylindrical loess sample collection device according to claim 1, characterized in that, The top of the main frame (1) is provided with a push-pull handle (7).

7. A cylindrical loess sample collection device according to claim 1, characterized in that, The front ends of the support frame (2) are all bent outwards, and the support frame (2) is located on both sides of the sampling tube (3).

8. A cylindrical loess sample collection device according to claim 4, characterized in that, The pulley (5-3) is a universal wheel that can rotate in any direction.

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